Website not loading- white page

Hello,
I would appreciate any help that anyone can give me. I have had this problem on again/ off again for months and just when it seems to be fixed, the problem happens again.

My website is scottsdalemomsblog.com

Occasionally the website stops running and the user just gets a white page. Sometimes the page loads and then the next time it wont. I have tired taking out most of our plugins (I am done to 16 active).

I have tried to find someone who can help me diagnose the problem. I have been told that the site is using too much bandwidth and that is why it isn’t loading. But I don’t really know what to do about it?

Should I try a new theme? Should I take all of the plugins off and load them back one by one?

Please I really appreciate any help that anyone can give me!